Tra or TRA may refer to:
Biology TRA (gene), in humans encodes the protein T-cell receptor alpha locus Tra (gene), in Drosophila melanogaster encodes the protein female-specific protein transformer Tra gene, a transfer gene Triple releasing agent or serotonin-norepinephrine-dopamine releasing agent
People Trà Hòa bố để, King of Champa (in what is now southern Vietnam) 1342−1360 Phạm Văn Trà (born 1935), Vietnamese general Trần Văn Trà (1918–1996), North Vietnamese general William Tra Thomas (born 1974), former US footballer
Other tRA (baseball statistic) Taiwan Relations Act of the US, 1979 Tarama Airport, Okinawa Prefecture, Japan (IATA code: TRA) Tax Receivable Agreements, a type of legal contract Theory of reasoned action, a model of persuasion Threat and risk assessment Tirahi language of Afghanistan, ISO 639-3 code Constellation Triangulum Australe Transport Research Arena, European conference Trans rights activist, in the transgender rights movement "Tra", a song by Bad Gyal from her 2018 album Worldwide Angel "Tra", a song by Soto Asa featuring Bad Gyal Technology readiness assessment Teaching Regulation Agency, the regulator for teachers and trainee teachers in England Taiwan Railways Administration, the former railway operator of Taiwan (now Taiwan Railway)